M42 Luminosity (work in progress) (jcthomas)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 Ori A) · 41 Ori C · 41 Ori D · 42 Ori) · 43 Ori) · 44 Ori) · Great Orion Nebula · Lower Sword · M 42 · M 43 · Mairan's Nebula · NGC 1973 · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1982 · Orion Nebula · The star 45 Ori · The star Hatysa (ι Ori · The star Mizan Batil I (c Ori · The star Mizan Batil II (θ2 Ori · The star Trapezium (θ1 Ori A · The star θ1 Ori C · The star θ1 Ori D · the Running Man Nebula

M42 Luminosity (work in progress), jcthomas

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M42 Luminosity (work in progress)

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M42 Luminosity (work in progress)

A little over 30 minutes of monochrome data on the first clear night in six weeks. I tried three different exposure lengths in an attempt to capture the full dynamic range of M42 but still ended up blowing out the core, will capture a bunch of 10-second exposures on the next clear, moonless night, to see if that will let me resolve the trapezium. There are some distorted star images at the top left of this frame (which was more obvious before the image was cropped), I believe this is because I am not quite at the right spacing for the FC-35 corrector and/or the focal plane is slightly tilted. In my opinion, the focuser on the FC100DZ is not as robust as it should be for astrophotography so it has probably let the focus tube twist just a bit, which is making the camera not quite square to the optics.

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	Distinct awarded users	Total awarded images
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This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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Mix of multiple sources
Other
Unknown

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Status	Basic success
Started	...
Astrometry.net job	9068964
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M42 Luminosity (work in progress)

M42 Luminosity (work in progress)

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M42 Luminosity (work in progress)

M42 Luminosity (work in progress)

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